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觀察以下數字序列:2, 4, 8, 16, ? 請問問號處應該填入什麼數字?

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Answer choices

  1. A 20
  2. B 32
  3. C 24
  4. D 64

Learning notes

每個數字都是前一個數字的 2 倍(16 × 2 = 32)。

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